Hand coal-cutting machine.



No. 64|,089. Patented Jan. 9, moo. H. EBERT.

HAND COAL CUTTING MACHINE.

(Application filed Aug. 24, 1899.)

(No Model.) 2 Sheets$heet I.

Patented Ian. 9, I900. H. EBERT.

HAND COAL CUTTING MACHINE.

(Application filed Aug. 24, 1899.)

2 SheetsSheet 2.

(No Model.)

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' standards.

llni'rnn Starts nruNr' OFFICE.

HENRY EBERT, OF TRENTON, ILLINOIS.

HAND COAL CUTTlNG MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 641,089, dated January 9, 1900.

Application filed August 24, 1899- Sarial No. 728,338. (No model.)

To MZ whom, it may concern.-

Be it known that I, HENRY EBERT, a citizen of the United States, residing at Trenton, in the county of Clinton and State of Illinois, have invented certain new and useful Improvements in Hand Coal-Cutting Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in manual coal-minin g machines; and the object is to simplify and improve the construction and increase the efficiency of the machine.

To these ends the invention consists in the construction, combination, and arrangement of the several elements of the device, as will be hereinafter more fully described, and particularly pointed out in the claim.

In the accompanying drawings the same reference characters indicate the same parts of the invention.

Figure 1 is a perspective view of my improved coal cutting or mining machine. Fig. 2 is a longitudinal vertical section. Fig. 3 is a transverse vertical section through the Fig. 4 is aside elevation of the inner face of one of the standards.

1 denotes the base or platform, the bottom face of which is provided with the rearwardlyinclined spurs 2 2 to hold the machine up to its work and prevent it sliding backward under the influence or impact of the cutting-bar.

3 3 denote the standards or uprights, which are connected to the platform by the hinges 4, so that when the machine is not in use the uprights may be folded down parallel with the platform, and when in use the standards may be rigidly supported in an upright position by the diagonal braces 5. The upper ends of the standards are formed with longitudinal grooves 6 6 to receive the inverted- U shaped brace 7, the parallel arms of which have a sliding engagement with the standards, being adjustably secured therein by means of the set-screws 8 8. The inner face of each standard is provided with a series of stirrup-bearings 9 9 to receive the trunnions 1O 10 of the oscillating yoke 12. This yoke is also formed with stirrup-bearings 13 13 to receive the trunnions 14. let of the cutter-bar 15, fulcrumed therein. The forward end of the cutter-bar is formed with a socket 16 to receive the cutter bit or chisel 17, and it carries a set-screw 18 tohold the cutter-bit in place.

The operation is extremely simple and re quires no further explanation for those skilled in coal-mining.

changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a machine of the class described, the horizontal platform, the standards hinged thereto and formed at their upper ends with the longitudinal guide-grooves, the U-shaped brace having a sliding engagement with said grooved standards, the stirrup-bearings fixed to the inner faces of said standards, the oscillating yoke and its trunnions having a bearing in said stirrups, the stirrup-bearings fixed in said oscillating yoke, and the cutter-bar and its trunnions having a bearing in said oscillating yoke, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HENRY EBERT.

Witnesses VALENTINE WELZ, GEORGE EBERT.

. 69 It will of course be understood that various- 

